ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,470,182, issued on Nov. 11, was assigned to REALTEK SEMICONDUCTOR Corp. (Hsinchu, Taiwan).
"Class D amplifier driving circuit" was invented by Chien-Hao Chiu (Hsinchu, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A class D amplifier driving circuit is used to generate an output gate driving voltage according to an input voltage that dynamically varies with the amplitude of an audio signal, and the driving voltage is used to drive the high-voltage transistor of the class D amplifier. The class D amplifier driving circuit includes: a reference voltage generation circuit for generating a second reference voltage according to a first reference volt...